Why radio stations use only AM and FM ? why they don't use PM ?

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Posted by:
Sara Mohammad
08-June-2013

there are three basic types of analog modulations AM, FM and PM why PM doesn't in use usually ?

Radio Radio Broadcasting Radio Network Planning Communication Systems الاتصالات السلكية واللاسلكية

Question added by هاشم المشارقة , Key Account Manager , Advanced United Systems Ltd. ( A member of Taj Holding Group)
Date Posted: 2014/07/09

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